/* ============================================================
   GROWTHUP Home — BLACK EDITORIAL v8
   BLACK × WHITE × LIGHT × SALT
   ============================================================ */

/* ─── HERO ─── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background: var(--color-bg);
  padding-top: var(--nav-height);
  overflow: hidden;
}

.hero-inner {
  position: relative;
  z-index: 2;
  padding-bottom: var(--space-20);
}

/* Hero 배경 — 미세 그리드 텍스처 */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 80px 80px;
  z-index: 1;
  pointer-events: none;
}

/* Hero 하단 페이드 */
.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(transparent, var(--color-bg));
  z-index: 1;
  pointer-events: none;
}

/* 대형 배경 워드마크 */
.hero-bg-wordmark {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: clamp(12vw, 20vw, 28vw);
  font-weight: var(--font-black);
  letter-spacing: -0.04em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255, 255, 255, 0.04);
  white-space: nowrap;
  user-select: none;
  pointer-events: none;
  z-index: 1;
  line-height: 1;
}

/* Hero 로고 블록 */
.hero-logo-block {
  margin-bottom: var(--space-12);
}

/* 로고 래퍼 — 별 포함 */
.hero-logo-mark {
  position: relative;
  display: inline-block;
  margin-bottom: var(--space-6);
}

/* 히어로 SVG 로고 */
.hero-logo-svg {
  height: clamp(36px, 5.5vw, 64px);
  width: auto;
  display: block;
  overflow: visible;
}

/* 별 시그니처 — 로고 우상단 */
.hero-star {
  position: absolute;
  top: -8px;
  right: -16px;
  width: clamp(12px, 2vw, 18px);
  height: clamp(12px, 2vw, 18px);
  animation: starTwinkle 4s ease-in-out infinite;
}

/* 에디토리얼 서브레이블 */
.hero-eyebrow {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-8);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.hero-eyebrow::before {
  content: '';
  display: block;
  width: 32px;
  height: 1px;
  background: var(--color-border);
}

/* 메인 헤드라인 */
.hero-headline {
  font-size: clamp(var(--text-4xl), 6vw, var(--text-8xl));
  font-weight: var(--font-black);
  line-height: var(--leading-none);
  letter-spacing: var(--tracking-tightest);
  color: var(--color-white);
  margin-bottom: var(--space-8);
  max-width: 900px;
}

.hero-headline em {
  font-style: normal;
  color: var(--text-secondary);
}

/* 서브 카피 */
.hero-sub {
  font-size: clamp(var(--text-base), 1.5vw, var(--text-lg));
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 500px;
  margin-bottom: var(--space-12);
}

/* CTA 버튼 영역 */
.hero-cta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* 스크롤 인디케이터 */
.hero-scroll {
  position: absolute;
  bottom: var(--space-8);
  right: var(--container-px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  z-index: 3;
}

.hero-scroll span {
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--text-muted);
  writing-mode: vertical-rl;
}

.hero-scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(var(--color-border), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; opacity: 0; }
  50%  { transform: scaleY(1); transform-origin: top; opacity: 1; }
  100% { transform: scaleY(1); transform-origin: bottom; opacity: 0; }
}

/* 히어로 세로 구분선 */
.hero-divider {
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 1px;
  height: 120px;
  background: linear-gradient(transparent, var(--color-border));
  z-index: 2;
  display: none;
}

/* ─── APPROACH 섹션 ─── */
.approach {
  background: var(--color-bg-2);
  border-top: 1px solid var(--color-border);
  padding-block: var(--section-py);
}

.approach-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-12);
  margin-bottom: var(--space-20);
}

.approach-header-left {
  flex: 0 0 auto;
}

.approach-header-right {
  flex: 1;
  max-width: 480px;
  padding-top: 0.5rem;
}

.approach-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--color-border);
}

.approach-step {
  padding: var(--space-10) var(--space-8);
  border-right: 1px solid var(--color-border);
  position: relative;
}

.approach-step:last-child {
  border-right: none;
}

.approach-step-num {
  font-size: var(--text-xs);
  font-weight: var(--font-normal);
  letter-spacing: var(--tracking-widest);
  color: var(--text-muted);
  margin-bottom: var(--space-8);
  display: block;
}

.approach-step-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  letter-spacing: var(--tracking-tight);
  color: var(--color-white);
  margin-bottom: var(--space-4);
  line-height: var(--leading-snug);
}

.approach-step-desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: var(--leading-relaxed);
}

.approach-step-arrow {
  position: absolute;
  bottom: var(--space-8);
  right: var(--space-8);
  color: var(--text-muted);
  font-size: var(--text-lg);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.approach-step:hover .approach-step-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ─── SOLUTIONS 섹션 ─── */
.solutions {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding-block: var(--section-py);
}

.solutions-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  margin-bottom: var(--space-20);
  align-items: end;
}

.solutions-intro {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.solutions-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--color-border);
}

.solution-item {
  display: grid;
  grid-template-columns: 64px 1fr auto;
  align-items: start;
  gap: var(--space-8);
  padding: var(--space-10) 0;
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-base);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}

.solution-item:hover {
  background: rgba(255, 255, 255, 0.02);
}

.solution-num {
  font-size: var(--text-xs);
  color: var(--text-muted);
  letter-spacing: var(--tracking-widest);
  padding-top: 4px;
}

.solution-content {}

.solution-title {
  font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl));
  font-weight: var(--font-bold);
  letter-spacing: var(--tracking-tight);
  color: var(--color-white);
  margin-bottom: var(--space-3);
  line-height: var(--leading-snug);
}

.solution-subtitle {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-4);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.solution-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 480px;
}

.solution-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.solution-tag {
  font-size: 10px;
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 3px 8px;
  border: 1px solid var(--color-border);
}

.solution-arrow {
  color: var(--text-muted);
  font-size: var(--text-xl);
  padding-top: var(--space-1);
  transition: transform var(--transition-base), color var(--transition-fast);
}

.solution-item:hover .solution-arrow {
  transform: translate(3px, -3px);
  color: var(--color-white);
}

/* ─── WHY GROWTHUP 섹션 ─── */
.why {
  background: var(--color-bg-2);
  border-top: 1px solid var(--color-border);
  padding-block: var(--section-py);
}

.why-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-24);
  align-items: start;
}

.why-left {}

.why-eyebrow {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-6);
}

.why-headline {
  font-size: clamp(var(--text-3xl), 4vw, var(--text-6xl));
  font-weight: var(--font-black);
  letter-spacing: var(--tracking-tightest);
  line-height: var(--leading-none);
  color: var(--color-white);
  margin-bottom: var(--space-8);
}

.why-desc {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-10);
}

.why-right {
  padding-top: var(--space-4);
}

.why-pillars {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--color-border);
}

.why-pillar {
  padding: var(--space-8) 0;
  border-bottom: 1px solid var(--color-border);
}

.why-pillar-head {
  display: flex;
  align-items: baseline;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
}

.why-pillar-symbol {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-widest);
  color: var(--text-muted);
  text-transform: uppercase;
  min-width: 56px;
}

.why-pillar-title {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  letter-spacing: var(--tracking-tight);
  color: var(--color-white);
}

.why-pillar-desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: var(--leading-relaxed);
  padding-left: calc(56px + var(--space-4));
}

/* ─── PROJECTS 섹션 ─── */
.projects-home {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding-block: var(--section-py);
}

.projects-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-8);
  margin-bottom: var(--space-16);
}

.projects-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--color-border);
}

.project-item {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: var(--space-8);
  align-items: center;
  padding: var(--space-8) 0;
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-base);
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.project-item:hover {
  background: rgba(255, 255, 255, 0.02);
}

.project-category {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--text-muted);
}

.project-info {}

.project-title {
  font-size: clamp(var(--text-lg), 2vw, var(--text-2xl));
  font-weight: var(--font-bold);
  letter-spacing: var(--tracking-tight);
  color: var(--color-white);
  margin-bottom: var(--space-2);
}

.project-meta {
  font-size: var(--text-xs);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.project-meta-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--text-muted);
}

.project-link-arrow {
  color: var(--text-muted);
  font-size: var(--text-xl);
  transition: transform var(--transition-base), color var(--transition-fast);
}

.project-item:hover .project-link-arrow {
  transform: translate(3px, -3px);
  color: var(--color-white);
}

/* ─── INSIGHTS 섹션 ─── */
.insights-home {
  background: var(--color-bg-2);
  border-top: 1px solid var(--color-border);
  padding-block: var(--section-py);
}

.insights-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-8);
  margin-bottom: var(--space-16);
}

.insights-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--color-border);
  border-left: 1px solid var(--color-border);
}

.insight-card {
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: background var(--transition-base);
  text-decoration: none;
  color: inherit;
}

.insight-card:hover {
  background: rgba(255, 255, 255, 0.02);
}

.insight-card--featured {
  grid-row: span 2;
  padding: var(--space-10);
  border-bottom: none;
}

.insight-category {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--text-muted);
}

.insight-title {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  letter-spacing: var(--tracking-tight);
  color: var(--color-white);
  line-height: var(--leading-snug);
  flex: 1;
}

.insight-card--featured .insight-title {
  font-size: clamp(var(--text-2xl), 2.5vw, var(--text-4xl));
}

.insight-date {
  font-size: var(--text-xs);
  color: var(--text-muted);
  letter-spacing: var(--tracking-wide);
}

/* Insights 빈 상태 */
.insights-empty {
  grid-column: 1 / -1;
  padding: var(--space-16) var(--space-8);
  text-align: center;
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.insights-empty p {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

/* ─── INSIGHTS HOME 미리보기 카드 ─── */
.insights-header-right {
  text-align: right;
}

/* HOME insights preview 카드 */
.preview-card {
  position: relative;
  height: 320px;
  overflow: hidden;
  background: #0A0A0A;
  text-decoration: none;
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  transition: transform 0.3s ease;
}

.preview-card:hover {
  transform: scale(1.005);
}

.preview-card--featured {
  height: 400px;
}

.preview-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.3) 60%, transparent 100%);
  z-index: 1;
}

.preview-card-body {
  position: relative;
  z-index: 2;
  padding: 20px;
}

.preview-card-badge {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #A0A0A0;
  margin-bottom: 8px;
  display: block;
}

.preview-card-title {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.4;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  margin: 0 0 4px;
}

.preview-card--featured .preview-card-title {
  font-size: 22px;
  -webkit-line-clamp: 3;
}

.preview-card-date {
  font-size: 10px;
  color: #A0A0A0;
  display: block;
}

@media (max-width: 768px) {
  .insights-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .insights-header-right {
    text-align: left;
  }

  #home-insights-grid > div:first-child {
    grid-template-columns: 1fr !important;
  }

  .preview-card--featured {
    grid-column: span 1 !important;
    height: 280px;
  }

  .preview-card {
    height: 220px;
  }
}

/* ─── CONTACT / CTA 섹션 ─── */
.home-contact {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding-block: var(--section-py);
}

.home-contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-24);
  align-items: start;
}

.home-contact-left {}

.contact-headline {
  font-size: clamp(var(--text-4xl), 5vw, var(--text-7xl));
  font-weight: var(--font-black);
  letter-spacing: var(--tracking-tightest);
  line-height: var(--leading-none);
  color: var(--color-white);
  margin-bottom: var(--space-8);
}

.contact-desc {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-10);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contact-info-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.contact-info-label {
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  min-width: 60px;
}

.home-contact-right {
  padding-top: var(--space-4);
}

/* 간단 문의 폼 스타일 */
.contact-simple-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}

.contact-submit-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.contact-submit-note {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* ─── 반응형 ─── */
@media (max-width: 1024px) {
  .approach-header {
    flex-direction: column;
    gap: var(--space-8);
  }

  .solutions-header {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .why-inner {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }

  .insights-grid {
    grid-template-columns: 1fr 1fr;
  }

  .insight-card--featured {
    grid-column: 1 / -1;
    grid-row: span 1;
  }

  .home-contact-inner {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }
}

@media (max-width: 768px) {
  .hero-headline {
    font-size: clamp(var(--text-3xl), 9vw, var(--text-5xl));
  }

  .hero-scroll {
    display: none;
  }

  .approach-steps {
    grid-template-columns: 1fr;
  }

  .approach-step {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-8) 0;
  }

  .approach-step:last-child {
    border-bottom: none;
  }

  .solution-item {
    grid-template-columns: 40px 1fr;
    grid-template-rows: auto auto;
  }

  .solution-arrow {
    grid-column: 2;
    grid-row: 1;
    justify-self: end;
  }

  .project-item {
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto;
  }

  .project-category {
    grid-column: 1 / -1;
    margin-bottom: var(--space-2);
  }

  .insights-grid {
    grid-template-columns: 1fr;
  }

  .insight-card--featured {
    grid-column: 1;
  }

  .contact-form-row {
    grid-template-columns: 1fr;
  }

  .contact-submit-row {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
  }

  .projects-header,
  .insights-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
  }
}

@media (max-width: 480px) {
  .hero-cta {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-cta .btn {
    width: 100%;
    justify-content: center;
  }

  .why-pillar-desc {
    padding-left: 0;
  }
}